Dumping-vehicle.



G. L. HRVEY.

DUMPING VEHICLE APPucATwN HLED 1uLY16.|918.

Patented Feb. 18, 1919.

4 SHEETS-SHEET 2.

G. L. HARVEYa DUMPING VEHICLE.

APPLICATION HLED JuLY 18. 1918 4 SHEETS-SHEET 3.

G. L. HARVEY.

DUMPING VEHICLE.

APPLICATION flLED 1uLY1. 1918.

LQMRQQ, Pzuentd 1181,18, 1919.

4 SHEETS-SHEET 4.

llltlllTED TNT FFEEO GER'GE L. HAEVEI, OF CHICAG-, LLINOIS.

DUffEmG-TEHICLE.

'specification of Letters Eatent.

Patented Feb. 18, 1919.

Application file July 16, 1918. Serial No. 245,226.

device shown in my co-pending application, Serial No. 237,852, filed June 3, 1918.

One of the objeotions to some or all of the elevating and tilting devices heretofore designed is that of unstability while in such position. ln many of the devices at present in use great care must be exercisedto avoid the tendency of the elevated body and' its load to over-balance the forward end of the vehicle and over-turn backward. This possibility arises from the fa'ct that when elevated, avertical line through the center of gravity of the load falls dangerously near 'to the rear aXle and if the burden is unevenly distributed, either in leading or discharging, such an accident is lilrely to occur.

lt may also occur if lthe vehicle is baclred against a curhwhile the body is elevated or while stationary if the vehicle is in a backwardly inclined position.

This dificulty is avoided in the present construction by so arranging the parts that the body is first raised horizontally to substantially its full height and then tilted, the forward or tilting end being raised in substantially a Vertical line. ln efiiect the body is carried bodily forward and in final elevated tilting position the center of gravity of the load falls at a point no farther to the rear than when the body is in normal lowered position.

Another advantage in the present .construction is in that the body may be elevated to substantially its full height with the body in a horizontal position. This has manyv advantages which will readily be understood'; it enables side instead of end discharge and provides for delivery of the load at elevated points as when icing refrigerator cars.

A further advantage is in the fact that' the lift by means of which the body is elevated and tilted is in substantially a straight line. lln all devices in which the body is oscillated about a fizred pivot at the rear of the vehicle, the front end must necessarily move in the arc of a circle and this serves to carry the forward end a considerable distance to the rear.v Consequently the lifting force must be exerted at a material angle in the elevated positions. This increases the force necessary to be applied and requires Stronger and heavier parts to withstand such force. ln my construction the lifting force is applied in substantially a Vertical line.

The invention will be more readily understood by reference to the accompanying drawings, wherein,

Figure 1 is a plan view of a dumping vehicle frame constructed in accordance with my invention;

. Fig. 2 is an elevation thereof showing thev body 'in full lines in an elevated substantially horizontal position and in dotted 'lines in an extreme elevated and tilted position;

Fig. 3 is a view showing the body in an extreme tilted but not elevated position;

Fig. a is a view showing a tiltedv and somewhat elevated position;

Fig. 5 is a view showing the tilted and less elevated position;

Fig. 6 is a sectional View taken on the line 6- 6 of Fig. 7

Fig. 7 is a sectional view on the line 7-7 of Fig. 6;

Fig. 8 is a sectional view on the line 8-8 of Fig. 7

ig. 9 is a fragmentary end elevation, an

Fig. 10 is a sectional view showing means for applying an elevating force. i

ln the drawings the device is shown as appliedto/a vehicle such as a motor truck, the same being provided with a main frame 10, of the usual form. Superposed on. the main frame is a 'body frame 11, which serves to support any suitable body 12. As a means for elevating and tilting the body l provide the beams 13., 14, the beam 13, consisting of twoV parallel members joined by suitable 'cross pieces 15, and the beam 14, likewise consisting of two parallel members joined by the cross members 16. The beams 13, 14, are pivoted at 17 and 18, respectively to the body frame' The beams extend in opposite directions and have a sliding bearing, one on the main frame 10, and the other on a third beam 19, which in normal operation forms a part of the main frame. The beam 13, which has a bearing on the main frame, is provided with rollers 20, as best shown in Figs- 2, 8 and 9, theseprollers in certain positions of the arts engaging stops 21, fixed to the rear o the main frame. lin-another position the rollers engage stops 22g at a point forward of the stops 21. In other words, the rear end of the beam 18, is adapted to move on its rollers between the stops as required in the subsequently described Operations.

rlfhe beam l-flz, has a sliding engagement, as best shown in Fig. 2, with the beam 19, anti-friotion rollers 23, on the beam l-i, engaging the underside of the tbeam 19, kand being adapted to reciprocate between stops 2a, 25, on the beam 19.

At the intersection of the beams 13, 14;, 'i provide fulcrum consisting of the stirrups 26, through 'which' the two' members of the 'beam 13, extend, anti-friction rolls 27, 28, beinA provided albove and below the beam niem' ers', as best shown in Fig. o, the stirrups adapted for oscillaition'on a transverse shaft 29, which has a 'bearing in a casting 80, this casting eng'aging the two sides of the two members constituting the beam. 14. The casting is engaged by a long threaded shaft 31', as best shown in Fig. 7, the shaft entendingI to the end of the frame 'and being adapted to be engaged 'by a cranlr 32, where.v 'by it may be rotated. in this manner the fulcruni member may be reoiprocated and located at different points as required in order to control the height or ent-ent of ele- Ya-tion of the body.

lin order to operate the device as a straight tilting' body, the beam 19, is pivoted at its rear end in the bracket 33, the sanie being norinally retained in the position shown in Fig. 2, by ineans of the loop 3%, or other suitable means. lf the body is to be tilted and not elevated the loop 3d, is disengaged from the forward end of Jthe beam lg, and upon elevation the parts assume the position shown in Fig. 3.

As a means for elevating the body l Toro- Yide the cylinder 35, to which a pipe 36, ma be connected'as, best shown in Fig. 10. piston 37, Operating within the cylinder, acts through the agency of the cables 38, engaging suitable arms 39, to lift the forward en of the body. One of the objects, as heretofore enplained, is to so arrange the parts that the lifting shall oe in substantially r7a Vertical line. That this is accomplished is illustrated in the full and do'tted line positions of Fig. 2. lt will be seen from ;z'igure that the lifting` force is supplied in substantially a line parallel to the piston rod constituting the lifting element.

ne of the important advantages arising from the use of this construction is that the body is elevated to substantially its full height while in a horizontal position. The first action following the application of a lifting force to the forward end of the body is to cause the tra el. of the beam lll, between the stops 242. As the body is elevated the free end of the beat. 3.3, 'genialne stationary and the beam oscillates about the roller 20, as a pivot. However, the beam li-l, not only oscillates about the roller 23, as a pivot, but it also travels rearwardly. flowever, after reaching the full line position of Fig. 2, that is, a .point where the roller 23, contacts the stop 25, the roller 20, then begins to travel forwardly toward the stop 22, and the body is tiltd accordingly. lt will 'be seen, however, that the body does not (luring the tilting movement, move rearwai'dly but`in effect its forward end travels in almost a Vertical line. ril`hus there is no tendency toward u-psetting the vehicle by moving the center of gravity of the load to the rear of the rear axle. lu its final completely elevated and tilting position it will bc seen that the body occupies a position substantially in line with that which it occupies when in its lowered position. The different positions which may be secured by changing the position of the fulcrum at the intersection of the beams 18, 14, are illustrated in lfigs. 2, a and 5. By adjusting this fulcruni any desired height of dump may be secured. lWhen the fulcrum is at its extreme forward position the body maybe eleyated to substantially its extreme height and still reinain in a. horizontal position. This is of -niaterial advantage when it is desired to duinp from the side or to deliver the contents of the load onto an elevated platform.

ln the Vccoinpanying claims the beam 14, is referred 'to as the vcie-'rating beam and the beam 13, as `the elevating and tilting beam; this for the reason that the beam ll, has only the function of'elevating the body while the beani 18, has the combined function of eleyating the body until the sliding end of the beam 14,, contacts its stop and thereafter as a tilting beam, the tilting continuing until the free end of the beam-13, contacts 'the stop 22..

Qf course, the extent of bodily horizontal eleyation is yaried by the position of the fulcruin at the intersection of the bearns and the diferent positions as to the entent of elevation .and tiltinfi are secured by adiusting this fulcruni. Claims directed to the adjustable fulcruni have been made in niy conending application heretofore refei'red to and therefore the same is not broadly clainied herein. lt is possible that the result secured by the use of the apparatus herein described might' be securedyby the use of a soinewhat. different arrangement and ll do not wish to lbe limited other than as indicated in the appended claims, the usual ad- Vanthge arising from the use of mechanical equivalents being afiorded. l am un-convinced that a similar result could not be secured by causing the elevating beam to slide on the body instead of on the support. The important feature from a practical standpoint is a Vertical line through the center of gravity of the load should remain at substantially the same point during the elevating and tilting actions.

claim:

1. In a body dumping device, the combination of a supporting frame, a body, a pair of oppositely extending beams, one end of each beam being pivoted to the front and rear respectively of the body, a sliding fulcrurn at the intersection of said beams, the free ends of said beams having the capacity for limited 'sliding movement relative to the supporting frame, the arrangement being such that on the application of a lifting force tothe body, the body is 'elevated substantially horizontally and then tilted, substantially; as described.

2.111 a vehicle 'body dumping device, the combination with the body of an elevating beam and an elevating and tiiting beam pivoted to the rear and front portions respectively of the body, the elevating beam having sliding enga ement with a support, a stop for iimitingte extent of sliding engagement, the elevating and tilting beam also having sliding engagement with a support between limiting stops, and means at the intersection of the beams for controlling the siiding movement of the free ends of the beams, the arrangement being such that the first efiect of a lifting force applied to the body is to cause both beams to act as ele- .vating devices, no substantial tilting action being secured until the elevating beam contacts its stop, substantially as described.

3. l`n a body dumping vehicle, the combination of a main frame, a body, a pair of oppositely extending beams pivoted to the front and rear ends respectively of the body, a third beam pivoted to the frame and normaliy located in parallelism therewi'th, one of said pair of beams having a sliding movement between stops on said third beam and the other of said pair of beams having a sliding movement between stops on said frame, substantially as described.

4. In a body dumping vehicle, the combination of a main frame, a body, a pair of oppositely extending' beams pivoted to the front and rear ends respectively of the body, a third beam pivoted to the lframe and normally iocated in parallelism therewith, one of said pair of beams having a sliding movement between stops on said third beam and the other of said pair of beams having a sliding movement between stops on said frame, and means permitting' aii of said beams to remain in parallelism during a iifting` movement applied to the front end of said body, Whereby the body is tilted on a pivot at its rear end. substantialiy as described.

5. lfn a vehicle body dumping device, the combination with the vehicle frame of a body, a beam pivoted at the rear end of the frame and norinally extending forwardly in parallelism with the frame, means for disengageably connecting said beam to the frame, an elevatingl beam pivoted to the rear of the body and slidably engaging the first mentioned beam, an elevating and tilting beam pivoted to the front end of the body and slidably engaging the frame, a fulcrum at the intersection of said elevating and elevating and tilting beams, and means for adjusting said fulcrum longitudinally of one of said beams, snbstantially as described.

6. In a dumping' vehicle, the combination of a main frame, a body, a pair of oppositely extending beams each thereof having a slidin bearing between stops on said frame, a sli ing fulcrum at the intersection of said beams, and means 'for applying a iifting' force to the body in such manner that the body is caused to be first raised while being maintained in a horizontal position and then tilted, substantially as described.

7. In a dumping' vehicle, the combination of a main frame, a body, a beam extending from the front of the body to the rear of the frame, a second beam extending from the rear of the body toward the front of the frame, both said beams slidably engaging the frame, stops for limiting the sliding movement, a fulcrum at the intersection of said beams, said fulcrum being fixed relative to said second beam and slidabie relative to the first beam, and means for applying a lifting force to the body Whereby said second beam is first caused to slide on the frame and then said first beam is caused to slide, substantially as described.

8. '"fn' a dumping vehicle, the combination of a main frame, a body, a beam exi tending' from the front of the body to the rear of the frame, a second beam extending from the rear of the body toward the front of the frame` both said beams slidably engaging the frame, stops for limiting the sliding movement, a fiilcrum at the intersection of said beams, said fulcrum being 'fixed relative to said second beam and slidable relative to the first-beam, and means for so lifting said body that said second beam is caused to slide on the frame before sliding movement of the first beam on the frame begins, substantially as described.

9. 'fn a dumping vehicle, the combination of a main frame, a body, a beam extending from the front of the body'to the rear of the frame, a second beam extending from the rear of the body toward the front of the frame, both said beams slida'bly engaging' the frame, stops for limit-ing the sliding movement, a ful-crum at the' intersection of said beams, said fulcrum being fixed relative to said second beam and slidable relative to the first beam, and means for so lifting' said body that said second 'beam is MMI) JE J. iecolng caused siide on the fnome, end during snoh 'siiding movenoent the siidehio end off the' -first beam remeins stetionoty whei'ehy the body is elevoted Whiie i'emoining in snhH stantizdiy a, horizontal position, substantioliy es desoiihed.

10. Ln a ,dnmping device, the combination of a, mein frame, a, body, a -pai of beains fotming the connection between thereme end body, both' seid. beems having o siiding beai'ing between stops on lthe mein homes foi'orinn the in'ofltseotion of said b'eoms, said oicrnnr 'being siidahly heid. on one eano end ndj'ustahiy held on the other beam, Whei'ehy the body may irst be mised Whiie in ehorizontoi position, the extent of hoeizontoi eieyetion depending on the odjusted position of said uiorum, substentieily as deserihed.

11|. in e dumpinff device, the combination of a tronie, 1a body, e, pair of shidebiy oo nected beztnis orniing e connection between the body and Emi means vessooisted with the beam, the body end the fit-enie 'for ei- Athe eievetion of the body White meintaining the .sanie in s fbstenti iiy horizontei position, end means :'o'f rend ing said heems inopemtive Whe'fehy e body mey be tiited without eie'vetion, snh=-- stontioii-y es d'esotibed.,

12, in o dninping device, the combination of a body, e pair of siidebiy con nected beoins forming' o connection between the body imho I means associated 'With the heens, the *bon 7 and the frame for effeoting eievotion of the body while inainteining the in substontiaiiy ehotizontoi sition and for theremtei' the body, end means ioi' rendemng said heezns ioo-erotive wheeby the 'body nie he on, subst biehy es de' of e frame, e body, o pair of slidebiy connected beoms oi'ming 2, connection between the body end frame, means associated With the beams, the body and the home, for .offi'ecting the 'elevation of the body while insinteinidg the 'same in suhstentielly o. hoi'izontoi' position, and means for odinsting the' connection between the beams Whereby the extent of horizontal'elevation may be changed, su'bstentialiy as desorihed.

14. n e dunnping device, the combination of a, frame., body, a pair of slidabiy connectsd-beems-foi'ming o connection between the body end frame, means associated With the hefnns, the 'body and the frame to?? efi'ecting the eleva-tion of the body while mainteining the some in suhstentielly a 'horizon tei position., means for adjusting' the connection between the beams Whereby the extent of horizontel eievation may be changed, and means to? l'endering said beoms ino-,penetive to perfomn theiia stated functions Whereby the body inny be tilted without e'ievat-ion, snbstontieiiyes desoribed.

15. In en eieveting end dumping device, the combination of e imme, e body, a pair of conneoting beom's, both thereoiE having a siid'ing heei'ing on the frame, o fnlci'um at the intei's-eotion of the beoms, means for zip-l plying a lifting force to the body in such niennei; that one boom siides on the 'home to the limit. of its moveinent before the other bm hegins its siiding movement, Whei'eby the body is eieveted horizonteily during' the period of the siiding moyement of 'the iirst inentioned been), substentiaily es tdesciv'ibed.

S'igned Chicago, in the county o'Cook State o'. TL-iiinois, this ith day of d'niy, iois. I 

